Crane bought out Cam Dynamics in the 70's. I spent way more time than I should have trying to identify a Cam Dynamics cam. The tables , charts, info to get identify a Cam Dynamics is not out there.
I found a guy on a that said he had the same cam from Dynamics that was Adv duration 280/280 480 lift on both on a 108 LSA.
The cam has a purple stripe on it, the members who look at pics first and text later, immediately claimed it was a MP purple shaft 284/484
Wrong answer, I will sell this cam for $40 plus shipping, use as is or present as a new core to Oregon Cams for a regrinding to your specifications
